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12 BJ-BEAM (GLULAM)
DURATION OF LOAD
Service
class
Permanent
Long term
Load Duration Class
Medium
term
Short
term
Instantaneous
1 0.60 0.70 0.80 0.90 1.10
2 0.60 0.70 0.80 0.90 1.10
3 0.50 0.55 0.65 0.70 0.90
Table 11. k mod for BJ-Beam design
MATERIAL
The material modification factor can be taken as M = 1.25.
SERVICE CLASS
Service class
k def
1 0.60
2 0.80
3 2.00
Table 12. k def for BJ-Beam design
To assist designers who are not familiar with Eurocode 5, Table
13 has been prepared by applying the appropriate factors to
the characteristic values of BJ-Beam for a domestic floor
application.
Width
(mm)
Depth
(mm)
Area
(mm 2 )
Weight (kg/m)
Section
Modulus
Z
(10 5 mm 3 )
Moment
of Inertia
I
(10 7 mm 4 )
Flexural
Rigidity
EI
(10 9 Nmm 2 )
Shear Rigidity
GA (10 6 N)
d/w
(–)
Depth
Factor
K h
(–)
Moment
Capacity
(kNm)
Shear
Capacity (kN)
38 195 7410 3.71 2.41 2.35 322 6.30 5.1 1.10 3.62 8.01
220 8360 4.18 3.07 3.37 462 7.11 5.8 1.10 4.60 9.04
235 8930 4.47 3.50 4.11 563 7.59 6.2 1.10 5.24 9.65
245 9310 4.66 3.80 4.66 638 7.91 6.4 1.09 5.68 10.06
300 11400 5.70 5.70 8.55 1171 9.69 7.9 1.07 8.34 12.32
45 195 8775 4.39 2.85 2.78 381 7.46 4.3 1.10 4.28 9.48
220 9900 4.95 3.63 3.99 547 8.42 4.9 1.10 5.45 10.70
235 10575 5.29 4.14 4.87 667 8.99 5.2 1.10 6.21 11.43
245 11025 5.51 4.50 5.51 756 9.37 5.4 1.09 6.72 11.92
300 13500 6.75 6.75 10.13 1387 11.48 6.7 1.07 9.88 14.59
350 15750 7.88 9.19 16.08 2203 13.39 7.8 1.06 13.24 17.02
400 18000 9.00 12.00 24.00 3288 15.30 8.9 1.04 17.06 19.46
450 20250 10.13 15.19 34.17 4682 17.21 10.0 1.03 21.34 21.89
90 195 17550 8.78 5.70 5.56 762 14.92 2.2 1.10 8.57 18.97
220 19800 9.90 7.26 7.99 1094 16.83 2.4 1.10 10.90 21.40
235 21150 10.58 8.28 9.73 1333 17.98 2.6 1.10 12.42 22.86
245 22050 11.03 9.00 11.03 1511 18.74 2.7 1.09 13.44 23.83
300 27000 13.50 13.50 20.25 2774 22.95 3.3 1.07 19.75 29.18
350 31500 15.75 18.38 32.16 4405 26.78 3.9 1.06 26.48 34.05
400 36000 18.00 24.00 48.00 6576 30.60 4.4 1.04 34.12 38.91
450 40500 20.25 30.38 68.34 9363 34.43 5.0 1.03 42.68 43.78
Table 13. BJ-Beam Design Values for Domestic Flooring Applications
Notes for Table 13:
1. The moment and shear capacities are applicable for domestic floor applications only
2. Strength modification factor k mod = 0.8
3. Partial material factor M = 1.25
4. Partial load factor F = 1.5
5. Depth factor = (600/h) 0.1
6. Larger section properties are available upon request
BJ-BEAM POINT LOADS AND UDL
PERMISSIBLE BJ-BEAM VERTICAL LOAD
CAPACITIES
BJ-Beam width
Maximum long term load per
metre run (kN/m)
Maximum single point
load (kN)
38 53 32
45 63 38
90 126 76
Table 14. Permissible BJ-Beam Vertical Loads
Notes for Table 14:
1. Loads are given for Eurocode 5 Medium Term load duration k mod =0.8